iPod Nano Help!!

Ok, so my iPod works fine when it is connected to the
computer, but it dies as soon as I disconnect it. The
screen slices diagonally and freezes, and the picture
slowly fades away.

My computer says its fully charged,

and I've tried
resetting it and putting it into Disk mode, but still
no luck. And it has been charging for quite a while
now. Any suggestions would be much appreciated!!!

I mean the actual iPod says its fully charged

Its about 4 days old. =)

Ok, so my iPod works fine when it is connected to the
computer, but it dies as soon as I disconnect it. The
screen slices diagonally and freezes, and the picture
slowly fades away.

My computer says its fully charged, and I've tried
resetting it and putting it into Disk mode, but still
no luck. And it has been charging for quite a while
now. Any suggestions would be much appreciated!!!

Oh, and when I re-plug it into the computer, I have
to re-select the language, as if it totally resets.
It does this even when I dont reset it. By the way, I
only reset it when its plugged into the computer,
because it doesnt work at all when it isnt plugged in.

Try holding down the select and menu button at the
same time.A black background and the apple symbol
will appear on the screen,and it usually unfreezes
your iPod.